Download Ad-aware from here: http://www.computercops.biz/downloads-file-292.html
Install by double-clicking on the downloaded file.
After installing but before running, update Ad-aware by using its Globe icon.
After updating, shutdown and restart Ad-aware.
Ad-aware is ready to scan and clean your system following these steps:

Install by double-clicking on the downloaded file.
Run Spybot S&D from desktop icon or Start menu.
Press "Search for updates" button to get list of updates available.
Press "Download updates" button.
Close all IE windows and close & restart Spybot S&D.
Press "Check for problems" button.
Have SpyBot remove all it marks in red by pressing "Fix selected problems".

Close Spybot S&D, reboot your system .

Empty your Temporary Internet Files and history in Internet Options. And clean out your
%Userprofile%\Local Settings\Temp
folder. It's a good idea to do that regularly.